/Engine/Plugins/Developer/Concert/ConcertMain/Source/ConcertTransport/Public/IConcertEndpoint.h
typedef TMulticastDelegate_TwoParams< void, const [FConcertEndpointContext](API\Plugins\ConcertTransport\FConcertEndpointContext) &, [EConcertRemoteEndpointConnection](API\Plugins\ConcertTransport\EConcertRemoteEndpointConnection) > FOnConcertRemoteEndpointConnectionChanged